We all know the scholar's mate, but what to do after you gain a lead in development as black?

Black doesn't have a lead in development.

[edit - oops, thought it was white to play for some reason]

Bh6 looks good.

I have found one game with 5.c3 in the position reached after the 4th move, Kaldunski/Wierzbicki, Polish corr. champ. 1993.  Black played 5...Bg7 and won in 44 moves.

Bh6 would work - and would allow Black to castle next move if practicable(over-protecting f7 some more)

Why not just ...Bg7? Black could play for an eventual ...d5, and the fianchetto opens if white plays d4. Another idea is ...d6 first (but after ...Bg7) and ...Bg4. It looks at least equal for black.

GM Hikaru Nakamura has played 2.Qh5 a fair bit, but he usually plays 5.Ne2 instead of 5.c3.  Black probably does well to develop sensibly.

Bh6 seems nice but i would rather continue developing with Bg7 Followed by 0-0. It seems that d4 is becoming the point of attack for black - white cannot play d4 - since the queen is no longer protecting that square.

Black responded to the opening to orthodox for my liking. I would play either 2.Qf6 or Bd6.

2. Qh5 can hardly be called the most accurate, but it's probably safe to say that white stands really well after 2... Bd6. Can I get a motivation on why Bd6 would be good?

Not that 2... Qf6 is great either.

I have looked at Bd6 and it looks solid from what I can tell.

So basicly, you see someone doing a premature attack with his queen, and you figure you had better ruin your development right away?

No not at all. My development would be nice and sound.

How would locking your own queenside in be sound? Or nice for that matter. You have a whole bishop locked down to d6 to defend a simple pawn, how could that be sound in this position?

Rich in chess 'unorthodox' is a euphamism for 'bad'. 

Well, you could always fianchetto the other bishop at some point in the game. Don't forget about Qf3 as well.

If black ever played Qf3 that could easily be countered by gxf3.

Keep the great ideas comming.

After 2.Qh5 perhaps black should try the quirky and unorthodox 'Resigns'. 

Qf6 rather.

2... Bd6 is to orthodox for my taste, I prefer Ke7 or a counterattack in the middle, 2.. d5!!